臨陣磨槍 [临阵－枪]

Jyutping lam4 zan6 mo4 coeng1
Pinyin lín zhèn mó qiāng

Definitions (CC-CANTO)
  1. last-minute preparation (slang)
Definitions (Wiktionary)
  1. phrase, idiomatic
    to prepare at the last moment
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）